<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>权限管理</el-breadcrumb-item>
    <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
     <el-row>
        <el-col>
            <el-button type="primary" @click="openDialog">添加角色</el-button>
        </el-col>
    </el-row>  
    <el-table :data="rolelist" border stripe>
        <el-table-column type="expand" label="展开列" align="center" width="80px">
            <template slot-scope="scope">
                <el-row :class="['bdbottom',i1===0?'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                    <!-- 渲染一级权限 -->
                    <el-col :span="5">
                        <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                        <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="19">
                        <!-- 通过for循环 嵌套渲染二级权限 -->
                        <el-row :class="[i2===0?'':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                            <el-col :span="6">
                                <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <el-col :span="18">
                                <el-tag closable type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                            </el-col>
                        </el-row>
                    </el-col>
                </el-row>
            </template>
        </el-table-column>
        <el-table-column type="index" label="序号" align="center" width="80px"></el-table-column>
        <el-table-column label="角色名称" prop="roleName" align="center"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc" align="center"></el-table-column>
        <el-table-column label="操作" align="center" width="300px">
            <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="editDialog(scope.row)">编辑</el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.id)">删除</el-button>
                <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
            </template>
        </el-table-column>
    </el-table>
    </el-card>
    <el-dialog
        title="分配权限"
        :visible.sync="setRightDialogVisible"
         width="30%" @close="setRightDialogClosed">
    <span>
        <!-- 树形控件 -->
        <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" 
        default-expand-all :default-checked-keys="defKeys" ref="treeRef">
        </el-tree>
    </span>
    <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights" >确 定</el-button>
  </span>
</el-dialog>
<el-dialog
  :title="title"
  :visible.sync="addRoleDialogVisible"
  width="30%"
  @close="closeDialog">
  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
    <el-form-item label="角色名称" prop="roleName">
        <el-input v-model="addForm.roleName"></el-input>
    </el-form-item>
    <el-form-item label="角色描述" prop="roleDesc">
        <el-input v-model="addForm.roleDesc"></el-input>
    </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="title=='添加角色'?addRole():editRole(addForm.id)">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
    data(){
        return{
            //所有角色列表
            rolelist:[],
            //控制分配权限的对话框
            setRightDialogVisible:false,
            // 所有权限数据
            rightslist:[],
            // 树形控件的属性
            treeProps:{
                children: 'children',
                label: 'authName'
            },
            //默认选中节点id值
            defKeys:[],
            // 当前即将分配权限的id
            roleId:'',
            title:'',
            addRoleDialogVisible:false,
            addForm:{},
            addFormRules: { 
                roleName:[{ required: true, message: '请输入用户名', trigger: 'blur' }],
                roleDesc:[{ required: true, message: '请输入用户名', trigger: 'blur' }]  
               }               

        } 
    },
    created(){
        this.getRolesList()
    },
    methods:{
        //获取所有角色列表
        async getRolesList(){
            const {data:res}=await this.$http.get('roles')
            if(res.meta.status!==200) return this.$message.error('获取角色列表失败')
            this.rolelist=res.data
            console.log('角色',this.rolelist);
        },
        // 根据id删除对应的标签
       async removeRightById(role,rightId){
          const confirmResult= await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult!=='confirm') return this.$message.info('取消删除')
         const{data:res}= await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
         if(res.meta.status!==200) return this.$message.error('删除失败')
        //  this.getRolesList()
        this.$message.success("删除成功")
        role.children=res.data
        },
        // 展示分配权限对话框
        async showSetRightDialog(role){
            this.roleId=role.id
            //获取所有权限数据
           const {data:res}= await this.$http.get('rights/tree')
           if(res.meta.status!==200) return this.$message.error('获取权限数据失败')
        //    获取权限数据保存到data中
           this.rightslist=res.data
           
           console.log('rights',this.rightslist);

        // 递归获取三级节点的id
        this.getLeafKeys(role,this.defKeys)
            this.setRightDialogVisible=true
        },
        // 通过递归的形式，获取角色下所有三级权限的id，并保存到 defKeys数组中
        getLeafKeys(node,arr){
            //如果当前node节点不包括children属性,则是3级节点
            if(!node.children){
                return arr.push(node.id)
            }
            node.children.forEach(item=>
            this.getLeafKeys(item,arr))
        },
        setRightDialogClosed(){
            this.defKeys=[]
        },
        //点击为角色分配权限
      async allotRights(){
            const keys=[...this.$refs.treeRef.getCheckedKeys(),
            ...this.$refs.treeRef.getHalfCheckedKeys()]
            // console.log('keys',keys);
            const idStr=keys.join(',')
          const {data:res} =await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
          if(res.meta.status!==200) return this.$message.error('分配权限数据失败')
          this.$message.success('分配权限成功')
          this.getRolesList()
          this.setRightDialogVisible=false
        },
        addRole(){
            console.log(1111);
        this.$refs.addFormRef.validate(async valid=>{
            console.log('valid',valid);
            if(!valid) return
            //发起添加用户请求
         const{data:res}=  await this.$http.post('roles',this.addForm)
         if(res.meta.status!==201)
         return this.$message.error('添加角色失败')
         this.$message.success('添加角色成功')
         //隐藏添加用户的对话框
         this.addRoleDialogVisible=false
         this.getRolesList()
        })
        },
        openDialog(){
            this.title='添加角色'
            this.addRoleDialogVisible=true
        },
        closeDialog(){
            this.addForm={}
            this.$refs.addFormRef.resetFields()
            this.addRoleDialogVisible=false

        },
        editDialog(row){
            this.title='编辑角色'
            this.addRoleDialogVisible=true
            console.log('row',row);
            this.addForm=row
        },
        editRole(id){
            this.$refs.addFormRef.validate(async valid=>{
            console.log('valid',valid);
            if(!valid) return
            //发起添加用户请求
         const{data:res}=  await this.$http.put('roles/'+ id,this.addForm)
         if(res.meta.status!==200)
         return this.$message.error('更新角色失败')
         this.$message.success('更新角色成功')
         //隐藏添加用户的对话框
         this.addRoleDialogVisible=false
         this.getRolesList()
        })
        },
        async removeById(id) {
      const confirmResult= await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err);
        // 如果用户点击确定删除，则返回值为字符串，confirm
        // 如果用户取消了删除，则返回值为字符串cancel
        if(confirmResult!=='confirm')
        return this.$message.info('已经取消删除')
       const {data:res}= await this.$http.delete('roles/' + id)
       if(res.meta.status!==200) return this.$message.error('删除失败')
       this.$message.success('删除角色成功')
       this.getRolesList()
      },
        
    }

}
</script>

<style lang="less" scoped >
.el-tag{
    margin:7px;
}
.bdtop{
border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;
}
.vcenter{
    display:flex;
    align-items: center;
}
</style>